HP 3PAR InForm OS 3.1.1 CLI Administrator's Manual

Creating a Group of Physical Copies
The InForm OS CLI also allows for the creation of consistent group physical copies of a list of virtual
volumes. A maximum group size of 100 virtual volumes is recommended for making a group of
physical copies.
• To create group physical copies, issue the creategroupvvcopy -p -s
<parent_VV>:<destination_VV>-pri high command, where:
◦ -p <parent_VV> creates a group of snapshots of the parent volume, as identified by
<parent_VV>, and copies data from the snapshots to the destination volume.
◦ -s saves the snapshot for quick resynchronization and retains the parent/copy relationship
between the parent and destination volumes.
◦ -pri <high|med|low> specifies the priority of the copy operation before it is started.
This option allows you to control the speed of the task. If this option is not specified, the
operation is started with default priority of medium. High priority indicates that the
operation will complete as fast as possible. Low priority indicates that the operation will
run slower than the default priority task. You can use the -pri option to raise the priority
of the task if your virtual volumes are unavailable and restoring access to the volume is
the highest priority. However, raising the priority of the task may impact host I/O
performance. This option cannot be used with -halt option.
The priority of the task can also be changed after it is running with the settask command.
For more information about changing the priority of a running task, see “Setting the
Priority of a Running Task” (page 125).
◦ <destination_VV> is the name of the destination volume. The destination volume must
be equal or greater in size to the parent volume, must be a writeable base volume, and
must not be exported as a VLUN.
For a complete list of options available for the creategroupvvcopy command, see the HP 3PAR
InForm OS Command Line Interface Reference and InForm OS Command Line Interface Help.
NOTE: The creategroupvvcopy command can be issued multiple times. However, the system
allows only two physical copy tasks to run concurrently. Any additional physical copy tasks are
queued, pending the completion of the active physical copy tasks.
NOTE: If you wish to copy multiple volumes, the <parent_VV>:<destination_VV> argument
can be repeated multiple times on the command line for a single instance of the
creategroupvvcopy command.
NOTE: The -halt option cancels a running group copy operation. The destination volume is
marked with the cpf status which indicates that the group copy operation failed. The cpf status
can be cleared by issuing a new instance of the creategroupvvcopy command.
Resynchronizing a Physical Copy
At some point, you may want to resynchronize a physical copy with its original base volume
because either virtual volume could have been modified since the copy operation was launched.
104 Managing Virtual Volume Copies